Multi-Scale Chronograph Reference 5975 / Patek Philippe

The limited edition Multi-Scale Chronograph has been released in celebration of 175 years of Patek Philippe. Dubbed the reference 5975, this 40mm chrono looks similar to the traditional 5170, but it’s not. The dial of the new 5975 has three different scales. This includes a pulsometer scale calibrated to 15 pulsations, allowing physicans to calculate a patient’s pulse in far less than one minute. Outside that, you’ll see a telemeter scale, which is used to calculate distance based on the difference between the speed of light and the speed of sound. Most often used in military situations, one could calculate how far the enemy was by timing the difference between when you saw a flash of light, and when you heard the sound of fire. Finally, the third scale is a tachymeter, or a scale used for measuring speed over known distance. The 5975 will be available in rose gold, yellow gold, and white gold, all in 400 pieces and each at CHF 55,000, and also in platinum with a black dial in 100 pieces at CHF 78,000 — via HODINKEE

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